Streaming Hillary

This commit is contained in:
Rodrigo Pedroso 2019-06-25 01:40:15 -04:00
commit 3235956181
7 changed files with 387 additions and 65 deletions

311
package-lock.json generated
View file

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@ -4,11 +4,13 @@
"private": true,
"dependencies": {
"@babel/runtime": "^7.4.5",
"cors": "^2.8.5",
"express": "^4.17.1",
"nodemon": "^1.19.1",
"react": "^16.8.6",
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"scripts": {

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@ -2,25 +2,54 @@
const express = require('express')
const app = express()
const http = require('http').createServer(app)
const io = require('socket.io')(http)
const cors = require('cors')
const port = 3030
const env = process.env.NODE_ENV || 'dev'
const bodyparser = require('body-parser')
const path = require('path')
const apiRoutes = require('./server/api.js')
const config = require('./config/config.json')
var Twitter = require('twitter')
let streamClient = new Twitter({
consumer_key: config.consumer_key,
consumer_secret: config.consumer_secret,
access_token_key: config.access_token_key,
access_token_secret: config.access_token_secret
})
// Bodyparser
app.use(bodyparser.urlencoded({ extended: true }))
app.use(bodyparser.json())
// Cors
app.use(function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*")
res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept")
next()
})
app.use(cors())
// Routing
app.use('/api', apiRoutes)
app.listen(port, () => console.log(`Server listening on port ${port}`))
// Socket
io.on('connection', (socket) => {
console.log('User connected')
let stream1 = streamClient.stream('statuses/filter', {track: 'Hillary%20Clinton'})
// streamClient.stream('statuses/filter', {track: 'Hillary%20Clinton'}, function(stream) {
stream1.on('data', function(tweet) {
io.emit('tweet', tweet)
})
stream1.on('error', function(error) {
console.log(error)
})
// })
socket.on('disconnect', () => {
stream1.destroy()
console.log('User disconnected')
})
})
http.listen(port, () => console.log(`Server listening on port ${port}`))

View file

@ -2,7 +2,6 @@
// MARK: Definitions
const express = require('express')
const router = express.Router()
const https = require('https')
const config = require('../config/config.json')
var Twitter = require('twitter')
@ -12,13 +11,6 @@ let client = new Twitter({
bearer_token: config.bearer_token
})
let streamClient = new Twitter({
consumer_key: config.consumer_key,
consumer_secret: config.consumer_secret,
access_token_key: config.access_token_key,
access_token_secret: config.access_token_secret
})
// MARK: Routes
// MARK: - /twitter
router.get('/twitter', (req, res) => {
@ -39,24 +31,6 @@ router.get('/twitter', (req, res) => {
})
})
// MARK: - /stream
router.get('/stream', (req, res) => {
res.writeHead(200, {
'Content-Type': 'text/plain',
'Transfer-Encoding': 'chunked'
})
streamClient.stream('statuses/filter', {track: req.query.hashtag}, function(stream) {
stream.on('data', function(tweet) {
// console.log(tweet.text)
res.write(JSON.stringify(tweet, 0, 2))
})
stream.on('error', function(error) {
console.log(error)
})
})
})
// MARK: - /
router.all('/', (req, res) => {
res.status(200).json({

View file

@ -4,7 +4,7 @@ import { getHillaryData } from "../actions/index"
import { getTrumpData } from "../actions/index"
export function Post(props) {
let { articles, candidate, getHillaryData, getTrumpData } = props
let { articles, articlesHillary, candidate, getHillaryData, getTrumpData } = props
// Fetch tweets when user clicks on candidate's button
useEffect(() => {
@ -29,6 +29,16 @@ export function Post(props) {
</li>
))}
</ul>
<p>Hillary stream</p>
<ul className="list-group list-group-flush">
{articlesHillary.map(el => (
<li className="list-group-item" key={el.id_str}>
<p>{el.created_at}</p>
<p>{el.text}</p>
</li>
))}
</ul>
</div>
)
}
@ -36,6 +46,7 @@ export function Post(props) {
function mapStateToProps(state) {
return {
articles: state.remoteArticles.slice(0, 10),
articlesHillary: state.remoteArticlesHillary.slice(0, 10),
candidate: state.candidate
}
}

View file

@ -6,6 +6,7 @@ import { DATA_LOADED_TO_ADD } from '../constants/action-types'
const initialState = {
articles: [],
remoteArticles: [],
remoteArticlesHillary: [],
candidate: ''
}
@ -23,22 +24,14 @@ function rootReducer(state = initialState, action) {
}
else if (action.type === DATA_LOADED) {
console.log('Payload: ' + action.payload)
return Object.assign({}, state, {
remoteArticles: action.payload.message.statuses
})
}
else if (action.type === DATA_LOADED_TO_ADD) {
console.log('Payload: ' + action.payload)
return Object.assign({}, state, {
remoteArticles: state.remoteArticles.concat(action.payload)
})
}
else if (action.type === "DATA_LOADED_TO_ADD_2") {
return Object.assign({}, state, {
remoteArticles: state.remoteArticles.concat(action.payload.message.statuses)
remoteArticlesHillary: state.remoteArticlesHillary.concat(action.payload)
})
}

View file

@ -1,9 +1,10 @@
import { takeEvery, call, put, all/*, take*/ } from 'redux-saga/effects'
// import { io, eventChannel } from 'redux-saga'
import { takeEvery, call, put, all, take, actionChannel } from 'redux-saga/effects'
import { eventChannel } from 'redux-saga'
import openSocket from 'socket.io-client'
export default function* watcherSaga() {
yield all([
workerHillary(),
workerHillaryStream(),
workerTrump()
])
}
@ -42,52 +43,53 @@ function* workerTrumpSaga() {
}
function getTrumpData() {
socket.disconnect()
return fetch('http://localhost:3030/api/twitter?hashtag=Donald%20Trump')
.then(response => response.json())
}
// ---------- Stream ----------------
/*
const socketServerURL = 'http://localhost:3030/api/stream?hashtag=space'
let socket;
const socketServerURL = 'http://localhost:3030/'
let socket
wrapping function for socket.on
function* workerHillaryStream() {
yield takeEvery('DATA_HILLARY_REQUESTED', listenServerSaga)
}
// wrapping function for socket.on
const connect = () => {
socket = io(socketServerURL);
socket = openSocket(socketServerURL)
return new Promise((resolve) => {
socket.on('connect', () => {
resolve(socket);
});
});
};
resolve(socket)
})
})
}
// This is how a channel is created
const createSocketChannel = socket => eventChannel((emit) => {
const createSocketChannel = (socket, tweet)=> eventChannel((emit) => {
const handler = (data) => {
emit(data);
emit(data)
};
socket.on('newTask', handler);
socket.on('tweet', handler);
return () => {
socket.off('newTask', handler);
socket.off('tweet', handler)
};
});
// saga that listens to the socket and puts the new data into the reducer
const listenServerSaga = function* () {
// connect to the server
const socket = yield call(connect);
const socket = yield call(connect)
// then create a socket channel
const socketChannel = yield call(createSocketChannel, socket);
const socketChannel = yield call(createSocketChannel, socket, 'hillary')
// then put the new data into the reducer
while (true) {
const payload = yield take(socketChannel);
yield put({type: 'DATA_LOADED', payload});
const payload = yield take(socketChannel)
yield put({type: 'DATA_LOADED_TO_ADD', payload})
}
}
*/